fix: ensure array is not associative

src/triggers/class-acf-data.php

@@ -142,7 +142,7 @@ function ( $post ) {
 					'updated_at' => get_the_modified_date( 'U', $post ),
 				);
 			},
-			$posts
+			array_values($posts)
 		);
 	}
 }